Cider - a Development Environment for Macs

Cider is a fully managed development environment for open source
hacking on Mac OSX. It’s powered by
rvm,
homebrew and
chef.
You only need
Xcode
to get started.

Cider builds everything up in ~/Developer. It won’t stomp on any of
your current installations so you don’t have to commit your entire
machine to cider immediately. It’s a breeze to rollback if you
really want to.